[PATCH] set CONFIG_NUMA on PAE kernel, i686 only.
Konrad Rzeszutek
konradr at redhat.com
Wed Jul 26 13:52:50 UTC 2006
On Tue, Jul 25, 2006 at 10:53:32PM +0200, Arjan van de Ven wrote:
> On Tue, 2006-07-25 at 13:46 -0700, keith mannthey wrote:
> > On Tue, 2006-07-25 at 15:43 -0400, Dave Jones wrote:
> > > On Tue, Jul 25, 2006 at 12:29:34PM -0700, keith mannthey wrote:
> > > > On Tue, 2006-07-25 at 14:34 -0400, Dave Jones wrote:
> > > > > On Tue, Jul 25, 2006 at 11:24:42AM -0700, keith mannthey wrote:
> > > > >
> > > > > > Modern Summit hardware x460 is EMT64e (x440,x445 is not) but as you
> > > > > > know sometimes customers run 32bit OS's on 64bit boxes.
> > > > >
> > > > > I hear this from time to time, and every time I ask "why doesn't
> > > > > 32bit emulation in 64bit kernel work for you work?", the only
> > > > > answers that seen to come back are various flavours of
> > > > > "we didn't know about it" or "haven't tried it".
> > > >
> > > > Is there a "Guarantee" that 32bit apps will just work with 64bit
> > > > kernels? I don't think all 32bit apps test (or work) on 64bit OS and a
> > > > such don't fall in the "Supported" configuration. Customers like to have
> > > > ground to stand on when things break. If they run unsupported in their
> > > > software stack things can get messy (who will fix it?) if problems arise
> > > > or performance is bad compared to 32bit native.
> > >
> > > This is exactly the sort of hand-waving I was talking about.
> > > If something doesn't work, lets find out why and _FIX_ it.
> > > Scaremongering, and handwaving isn't going to solve a single bug.
> >
> > As noted ISV's move slow and customers even slower. Some customers
> > would still buy AS2.1 if they could. I have head customers say (this
> > year) that the can't move to 2.6 (RHEL 4) because it hasn't been out
> > long enough and saw the risk as too high. It is out of my scope for me
> > to say what all the reasons are for why customers don't just run 64-bit
> > all the time, but they don't. I think change takes time.
> >
>
> but how is that type of customer relevant for FC6 ?
FC6 will transition to RHEL5. So this is a perfect place to make sure
this is technically feasible and does not break non-IBM hardware.
>
>
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Konrad Rzeszutek 1-(978)-392-3903 or 1-(617)-693-1718
IBM on-site partner.
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